Ignition Coil Pack and Iridium Spark Plugs Set for 3.5L V6 - Reliable

In this review the reviewer looks at a combined set of six ignition coils and six iridium spark plugs designed for Nissan and Infiniti 3.5L V6 engines. The bottom line is that this kit is best for owners who want a complete, budget-friendly replacement that matches common OE numbers and aims to restore smooth idle and dependable starts. It suits DIY mechanics and independent shops looking for a full-bank swap; the single biggest reason to buy is the convenience of receiving six coils and six high-performance iridium plugs that explicitly replace known OE part numbers.

Key Features

• Complete kit: Contains six ignition coils and six iridium spark plugs so a full bank of cylinders can be serviced at once without sourcing parts separately.
• Wide vehicle compatibility: Fitment lists common Nissan and Infiniti 3.5L V6 models, including Altima, Maxima, Murano, Pathfinder and several Infiniti models, reducing fitment uncertainty for those engines.
• OE replacement numbers: Replaces multiple OE ignition coil and spark plug numbers like UF550 and 22448JA10A, which helps confirm compatibility for many earlier model years.
• High voltage coils: Coils use copper wire and higher coil turns capable of generating strong voltage to encourage more complete combustion and potentially improved fuel use.
• Iridium spark plugs: Plugs use iridium center electrodes for longer wear life, faster response and improved cold start and idle behavior.

Who It's For

This set is aimed at owners of Nissan and Infiniti V6 3.5L vehicles who prefer to replace all ignition coils and spark plugs at once, especially DIY mechanics and independent shops that value an all-in-one kit matched to multiple OE numbers. It is also useful for anyone experiencing idle shaking or cold start issues who wants to address ignition components without piecing together parts individually.

Those who should look elsewhere include owners of engines outside the listed model years or non-3.5L variants, and buyers who require OEM-branded packaging or dealer-specific warranties; this aftermarket kit emphasizes value and fitment rather than OEM branding.

Pros & Cons

Pros

• Complete bank replacement simplifies maintenance and ensures matched parts across cylinders.
• Good value for money compared with buying coils and plugs separately.
• Iridium plugs and high-turn coils aim to improve combustion, fuel efficiency and reduce emissions.
• Explicit OE replacement numbers reduce guesswork when confirming compatibility.

Cons

• Power improvements received mixed feedback from customers, so gains may be subtle depending on vehicle condition.
• Aftermarket fit and finish can vary from OEM in some cases, so buyers wanting dealer parts may prefer original equipment sources.

Specifications

Contents	6 ignition coils and 6 iridium spark plugs
Engine fit	Nissan/Infiniti V6 3.5L
Compatible models	Altima, Maxima, Murano, Pathfinder, 350Z, Quest, EX35, FX35, G25/35, M35, Q50/Q70/QX60
Replaces OE numbers	22448JA10A, 22448JA10C, 22448JA11C, 22448JN10A, UF550, C1670, spark plug 22401-1LA1C
Coil design	Copper wire with higher coil turns, high voltage output
Spark plug tip	Iridium center electrode

Our Verdict

For owners of Nissan and Infiniti 3.5L V6 vehicles who need a full-bank ignition refresh, this set offers good value and clear OE cross-references, combining high-turn coils with long-life iridium plugs. It is a practical, cost-effective choice to restore idle quality and improve ignition reliability, though expectations for measurable power gains should be moderate.

Frequently Asked Questions

Will these fit my 2014 Maxima?
Yes, the kit lists compatibility with 2009-2014 and 2016-2020 Maxima 3.5L V6 engines.

Do the spark plugs use iridium?
Yes, the included spark plugs have iridium center electrodes designed for longer life and better cold start response.

Are these direct replacements for UF550 coils?
Yes, the package states it replaces OE numbers including UF550 and several 22448... coil part numbers.